cover invalid codec errors

bio-seq-derive/tests/fail/invalid_codec.rs

@@ -0,0 +1,57 @@
+use bio_seq::prelude::*;
+
+#[derive(Codec)]
+struct NotEnum {
+    a: (),
+    c: (),
+    g: (),
+    t: (),
+}
+
+#[derive(Codec)]
+enum NoDiscriminants {
+    A,
+    C,
+    G,
+    T,
+}
+
+#[derive(Codec, PartialEq, Debug, Hash)]
+#[bits(2)]
+enum BadWidth {
+    A = 0b000,
+    C = 0b001,
+    G = 0b010,
+    T = 0b100,
+    X = 0b011,
+}
+
+#[derive(Codec, PartialEq, Debug, Hash, Eq, Copy, Clone)]
+#[bits(3)]
+enum BadDiscriminant {
+    A = 0b000,
+    C = 3,
+    G = 0b010,
+    T = 0x04,
+    X = 1.0,
+}
+
+// Test whether codec is #[repr(u8)]
+/*
+#[derive(Codec, Eq, Debug, Hash, PartialEq, Copy, Clone)]
+enum NoRepr {
+    A = 0b11,
+    C = 0b01,
+    G = 0b00,
+    T = 0b10,
+}
+*/
+
+fn main() {
+    let _c = NotEnum {
+        a: (),
+        c: (),
+        g: (),
+        t: (),
+    };
+}

bio-seq-derive/tests/fail/invalid_codec.stderr

@@ -0,0 +1,34 @@
+error: Codec can only be derived for enums
+ --> tests/fail/invalid_codec.rs:4:1
+  |
+4 | / struct NotEnum {
+5 | |     a: (),
+6 | |     c: (),
+7 | |     g: (),
+8 | |     t: (),
+9 | | }
+  | |_^
+
+error: Codec derivations require discriminants
+  --> tests/fail/invalid_codec.rs:13:5
+   |
+13 |     A,
+   |     ^
+
+error: Bit width is not large enough encode all variants (min: 3)
+  --> tests/fail/invalid_codec.rs:20:1
+   |
+20 | #[bits(2)]
+   | ^^^^^^^^^^
+
+error: Codec derivations require byte or integer discriminants
+  --> tests/fail/invalid_codec.rs:36:5
+   |
+36 |     X = 1.0,
+   |     ^
+
+error[E0308]: mismatched types
+  --> tests/fail/invalid_codec.rs:36:9
+   |
+36 |     X = 1.0,
+   |         ^^^ expected `isize`, found floating-point number

bio-seq-derive/tests/fail/non_ascii.rs

@@ -0,0 +1,6 @@
+use bio_seq::prelude::*;
+
+fn main() {
+    let _seq = iupac!("ACNSWGT🤬");
+    let _seq = dna!("ACG🫣T");
+}

bio-seq-derive/tests/fail/non_ascii.stderr

@@ -0,0 +1,11 @@
+error: Non-ASCII characters in IUPAC string
+ --> tests/fail/non_ascii.rs:4:23
+  |
+4 |     let _seq = iupac!("ACNSWGT🤬");
+  |                       ^^^^^^^^^^^
+
+error: Non-ASCII characters in DNA string
+ --> tests/fail/non_ascii.rs:5:21
+  |
+5 |     let _seq = dna!("ACG🫣T");
+  |                     ^^^^^^^^